{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["compare", "hyponym of", "part of"], "input": "In contrast , we detect and describe 2D features in a nonlinear scale space by means of nonlinear diffusion filtering ."}
{"compare": [], "hyponym of": [], "part of": []}